- Mathematical modeling of a battery energy storage system in grid forming modeRahmoun, Ahmad; Armstorfer, Andreas; Biechl, Helmuth; Rosin, Argo2017 IEEE 58th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON) : proceedings : Latvia, Riga, 12-13 October, 20172017 / [6] p. : ill http://dx.doi.org/10.1109/RTUCON.2017.8125625